Fabry-Perot Interferometers

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Anbo Wang - One of the best experts on this subject based on the ideXlab platform.

  • Simple interrogator for optical fiber-based white light Fabry–Perot Interferometers
    Optics Letters, 2017
    Co-Authors: Zhihao Yu, Zhipeng Tian, Anbo Wang
    Abstract:

    In this Letter, we present the design of a simple signal interrogator for optical fiber-based white light Fabry–Perot (F-P) Interferometers. With the hardware being composed of only a flat fused silica wafer and a CCD camera, this interrogator translates the spectral interference into a spatial interference pattern, and then demodulates the F-P cavity length with the use of a relatively simple demodulation algorithm. The concept is demonstrated experimentally in a fiber optic sensor with a sapphire wafer as the F-P cavity.

  • simple interrogator for optical fiber based white light fabry perot Interferometers
    Optics Letters, 2017
    Co-Authors: Zhihao Yu, Zhipeng Tian, Anbo Wang
    Abstract:

    In this Letter, we present the design of a simple signal interrogator for optical fiber-based white light Fabry–Perot (F-P) Interferometers. With the hardware being composed of only a flat fused silica wafer and a CCD camera, this interrogator translates the spectral interference into a spatial interference pattern, and then demodulates the F-P cavity length with the use of a relatively simple demodulation algorithm. The concept is demonstrated experimentally in a fiber optic sensor with a sapphire wafer as the F-P cavity.

  • multiplexed high temperature sensing with sapphire fiber air gap based extrinsic fabry perot Interferometers
    Optics Letters, 2010
    Co-Authors: Jiaju Wang, O Dong, Eva M Lally, Jianmi Gong, Anbo Wang
    Abstract:

    In this Letter we present a high temperature multipoint sensing method using sapphire fiber air gap-based extrinsic Fabry–Perot Interferometers. Three sensors are fabricated and tested in a single sensing link. Experimental results show that the air gap-based high temperature sensors have a very high temperature sensitivity (>20 nm/°C) and resolution (<0.3°C) and are capable of operating at temperatures well above 1000°C. The multiplexed sapphire sensors present a significant advancement over traditional single-point sensors for critical high temperature applications.

Zuyuan He - One of the best experts on this subject based on the ideXlab platform.

  • time domain multiplexed high resolution fiber optics strain sensor system based on temporal response of fiber fabry perot Interferometers
    Optics Express, 2017
    Co-Authors: Jiageng Chen, Zuyuan He
    Abstract:

    We developed a multiplexed strain sensor system with high resolution using fiber Fabry-Perot Interferometers (FFPI) as sensing elements. The temporal responses of the FFPIs excited by rectangular laser pulses are used to obtain the strain applied on each FFPI. The FFPIs are connected by cascaded couplers and delay fiber rolls for the time-domain multiplexing. A compact optoelectronic system performing closed-loop cyclic interrogation is employed to improve the sensing resolution and the frequency response. In the demonstration experiment, 3-channel strain sensing with resolutions better than 0.1 ne and frequency response higher than 100 Hz is realized.

  • ultra high resolution large dynamic range optical fiber static strain sensor using pound drever hall technique
    Optics Letters, 2011
    Co-Authors: Qingwen Liu, Tomochika Tokunaga, Zuyuan He
    Abstract:

    We report the realization of a fiber-optic static strain sensor with ultrahigh resolution and large dynamic range for the applications of geophysical research. The sensor consists of a pair of fiber-Bragg-grating-based Fabry–Perot Interferometers as sensor heads for strain sensing and reference, respectively. The Pound–Drever–Hall technique is employed to interrogate the sensor heads, and a cross-correlation algorithm is used to figure out the strain information with high precision. Static strain resolution down to 5.8 nanostrains is demonstrated. The dynamic range can be extended up to hundreds of microstrains, and the measuring period is a few tens of seconds.

Tomochika Tokunaga - One of the best experts on this subject based on the ideXlab platform.

  • sub nano resolution fiber optic static strain sensor using a sideband interrogation technique
    Optics Letters, 2012
    Co-Authors: Qingwen Liu, Tomochika Tokunaga
    Abstract:

    We propose a novel sideband interrogation technique with multiplex radio frequency intensity and phase modulation to measure the resonance frequency difference between two optical resonators. Based on this new technique, an ultrahighly sensitive fiber-optic static strain sensor system consisting of a pair of identical fiber Fabry-Perot Interferometers is built by incorporating a cross-correlation data processing algorithm. A static strain resolution down to 0.8 ne is demonstrated experimentally, which makes the sensor system a useful tool for geophysical research applications.

  • ultra high resolution large dynamic range optical fiber static strain sensor using pound drever hall technique
    Optics Letters, 2011
    Co-Authors: Qingwen Liu, Tomochika Tokunaga, Zuyuan He
    Abstract:

    We report the realization of a fiber-optic static strain sensor with ultrahigh resolution and large dynamic range for the applications of geophysical research. The sensor consists of a pair of fiber-Bragg-grating-based Fabry–Perot Interferometers as sensor heads for strain sensing and reference, respectively. The Pound–Drever–Hall technique is employed to interrogate the sensor heads, and a cross-correlation algorithm is used to figure out the strain information with high precision. Static strain resolution down to 5.8 nanostrains is demonstrated. The dynamic range can be extended up to hundreds of microstrains, and the measuring period is a few tens of seconds.

Qingwen Liu - One of the best experts on this subject based on the ideXlab platform.

  • sub nano resolution fiber optic static strain sensor using a sideband interrogation technique
    Optics Letters, 2012
    Co-Authors: Qingwen Liu, Tomochika Tokunaga
    Abstract:

    We propose a novel sideband interrogation technique with multiplex radio frequency intensity and phase modulation to measure the resonance frequency difference between two optical resonators. Based on this new technique, an ultrahighly sensitive fiber-optic static strain sensor system consisting of a pair of identical fiber Fabry-Perot Interferometers is built by incorporating a cross-correlation data processing algorithm. A static strain resolution down to 0.8 ne is demonstrated experimentally, which makes the sensor system a useful tool for geophysical research applications.

  • ultra high resolution large dynamic range optical fiber static strain sensor using pound drever hall technique
    Optics Letters, 2011
    Co-Authors: Qingwen Liu, Tomochika Tokunaga, Zuyuan He
    Abstract:

    We report the realization of a fiber-optic static strain sensor with ultrahigh resolution and large dynamic range for the applications of geophysical research. The sensor consists of a pair of fiber-Bragg-grating-based Fabry–Perot Interferometers as sensor heads for strain sensing and reference, respectively. The Pound–Drever–Hall technique is employed to interrogate the sensor heads, and a cross-correlation algorithm is used to figure out the strain information with high precision. Static strain resolution down to 5.8 nanostrains is demonstrated. The dynamic range can be extended up to hundreds of microstrains, and the measuring period is a few tens of seconds.

Zhihao Yu - One of the best experts on this subject based on the ideXlab platform.

  • Simple interrogator for optical fiber-based white light Fabry–Perot Interferometers
    Optics Letters, 2017
    Co-Authors: Zhihao Yu, Zhipeng Tian, Anbo Wang
    Abstract:

    In this Letter, we present the design of a simple signal interrogator for optical fiber-based white light Fabry–Perot (F-P) Interferometers. With the hardware being composed of only a flat fused silica wafer and a CCD camera, this interrogator translates the spectral interference into a spatial interference pattern, and then demodulates the F-P cavity length with the use of a relatively simple demodulation algorithm. The concept is demonstrated experimentally in a fiber optic sensor with a sapphire wafer as the F-P cavity.

  • simple interrogator for optical fiber based white light fabry perot Interferometers
    Optics Letters, 2017
    Co-Authors: Zhihao Yu, Zhipeng Tian, Anbo Wang
    Abstract:

    In this Letter, we present the design of a simple signal interrogator for optical fiber-based white light Fabry–Perot (F-P) Interferometers. With the hardware being composed of only a flat fused silica wafer and a CCD camera, this interrogator translates the spectral interference into a spatial interference pattern, and then demodulates the F-P cavity length with the use of a relatively simple demodulation algorithm. The concept is demonstrated experimentally in a fiber optic sensor with a sapphire wafer as the F-P cavity.